discreetly
Definitions
In a manner that is careful and circumspect to avoid causing offense or gaining unwanted attention.
In a way that is intentionally unobtrusive or inconspicuous.
Examples
She discreetly slipped a note into his hand during the meeting.
The waiter discreetly removed the empty glasses from our table without interrupting the conversation.
Synonyms
cautiously subtly secretly quietly inconspicuously privately tactfully
Antonyms
openly blatantly publicly conspicuously loudly obtrusively flagrantly